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Answer to Question #61641 in Other Biology for muhammad umar

Question #61641


15 About ----------- percentage of all known species of animals are insect
20
30
40
70
16 The only invertebrate that can fly is
Bats
Squirrel
Vulture
Insects
17 The body of an insect is divided into the head, thorax and
metathorax
cephalopoda
mesothorax
abdomen
18 Insects carries out gaseous exchange by means of
thorax
metathorax
abdomen
spiracles
19 Which of these may not be an adaptive feature of the arthropods?
possession of exoskeleton
webbed feet
jointed limbs
pecialised digestive system
20 The phylum echinodermata include all of the following except
sea crab
sea urchins
sea-lilies
star fish

Expert's answer
15. 70
16. Insects
17. abdomen
18. spiracles
19. jointed limbs
20. sea crab

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